What is the meaning of Pólo?

polo (a ball game where two teams of players on horseback use long-handled mallets to propel the ball along the ground and into their opponent's goal)

field (open country; space used to grow crops or hold livestock; course of study or domain of knowledge)

Pre-reform spelling (used until 1990) of polo. Still used in countries where the agreement hasn't come into effect; may occur as a sporadic misspelling.